Black screen on startup; horizontal lines on screen precede crash

A few days ago my Mac Book Pro screen freaked out. Specifically, it had multicolored horizontal lines all over, but underneath I could see a dark grey dialogue box telling my to restart the computer.
Now, about two thirds of the time, when I try to start up the screen stays black and it does not make any startup noises but the power light comes on steady. One time this was accompanied by a beeping tone that beeped in sets of three. The other one third of the time it starts up fine.
Once it shut itself down after the horizontal lines appeared again.
Once it has frozen while on the screensaver and I had to manually shut it down.
Any idea what might be causing this? My computer is still under warrantee but I live over an hour and a half from the nearest apple store.

Welcome to Apple Discussions!
If you have the NVIDIA GeForce 8600M GT video chip, you might be developing this problem:
http://support.apple.com/kb/TS2377
The beeps and kernel panic do seem to point to a RAM problem. If you replaced the original Apple RAM with 3rd party RAM, try the Apple RAM if you still have it and see if this cures the problem. Otherwise, try reseating it as described earlier.
Here is an article that may be of help:
http://www.thexlab.com/faqs/kernelpanics.html
Finally, since you are so far from an Apple Store, call Apple on the phone and explain your problems. It's possible that they could refer you to an AASP in your area that could evaluate your machine and save you a trip. It's also possible they could determine that you have some sort of hardware problem and could send you a box to ship your Mac to the Repair Depot. In any event, be sure to contact Apple while your warranty is in effect and get a case number, especially if you are getting close to the end of your Applecare.
Good luck!

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Hi jkjuarez2012,
Thank you for visiting Apple Support Communities.
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{edited}

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Quote from: saram1805 on 03-March-11, 14:29:38
I've tried both ports on the card and the same issue is there.
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Quote
Do you mean test both cards?
I mean what i've told you:
Quote from: Svet on 03-March-11, 13:51:09
do test each one VGA alone to isolate the issue.
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Here is the Display Quality issues section for the monitor. There are some issues that don't apply. Try the ones that do to see if they help.
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HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)
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**Click the Thumbs Up+ to say 'Thanks' and the 'Accept as Solution' if I have solved your problem.**
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It may not be only related to the browser's video rendering!!
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http://postimage.org/image/lihagn8px/
Looks like the ones that the one posted by Mike in Tampa Bay
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Black screen on startup; horizontal lines on screen precede crash

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